Federated search of PmWiki and WordPress

I want to be able to search both my wiki(s) and my blog(s).
That is - a federated search.

Here are some notes for myself, mainly.

http://www.xradiograph.com/interference/?s=searchterm&feed=rss2

e.g.:http://www.xradiograph.com/interference/?s=gif&feed=rss2

http://codex.wordpress.org/WordPress_Feeds#Search

Using SharePoint FederatedSearch with WordPRess - from 2012. Might have some jumping-off points.